摘要
研究并建立了溴菌腈在苹果和土壤中的残留分析方法。苹果和土壤样品分别用丙酮、二氯甲烷和甲苯提取,固相萃取(SPE)净化,气相色谱(GC)测定。溴菌腈的最小检测量为2.0×10-11g,苹果和土壤中的最低检出质量分数均为0.03mg/kg。在添加0.05～2.5mg/kg时,土壤中溴菌腈的平均添加回收率为80.4%～105.1%,变异系数为1.9%～8.4%;苹果中的平均添加回收率为80.6%～96.7%,变异系数为2.0%～4.0%。该方法的准确性、精确性以及灵敏度均达到农药残留分析的要求。
A method was established for determining bromothalonil residues in apple and soil. Residues were extracted with toluene, acetone and dichloromethane, cleaned up by SPE cartridge, and determined with GC equipped by ECD detector. The average recoveries and coefficient of variations of the method were 80.6 to 96.7%, 2.0 to 4.0% for apple samples, and 80.4 to 105.1%, 1.9 to 8.4% for soil sample, respectively. The minimum detectable amount of bromothalonil were 2.0 × 10^-11 g, and the minimum detectable concentrations were 0.03 mg/kg, respectively. These results showed that the method accords with demands of residue analysis of pesticide.
出处
《农药》
CAS
北大核心
2008年第1期46-47,共2页
Agrochemicals
基金
农业部农药检定所残留项目(2004ZN106)
关键词
溴菌腈
苹果
土壤
残留分析
bromothalonil
apple
soil
residue analysis
